What is Visual Secret Sharing(VSS) Scheme ? (A Cryptographic Technique with a lot of Fun; However practical use for visual authentication )
Visual cryptography may not be of great practical importance in cryptography (although the idea of visual authentication schemes might be of practical value). However, visual cryptography is a great topic for teaching purposes, and for introducing cryptographic ideas to a wide audience. Besides, it’s a lot of fun!
Source : D.R. Stinson, “An introduction to visual cryptography”, presented at Public Key Solutions’97.
Available at http://bibd.uni.edu/~stinson/VCS-PKS.ps.